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Finding the Fourth Proportional to 6,849.76, 9,451.98 and 3,865.42

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Solution

The fourth proportional to 6,849.76, 9,451.98 and 3,865.42 is: 5,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,849.76 : 9,451.98 = 3,865.42 : x
  2. Step 2: Convert to fraction form
    6,849.76/9,451.98 = 3,865.42/x
  3. Step 3: Cross multiply
    6,849.76x = 9,451.98 × 3,865.42
  4. Step 4: Simplify right side
    6,849.76x = 36,535,872.53
  5. Step 5: Solve for x
    x = 36,535,872.53/6,849.76
  6. Step 6: Final answer
    x = 5,333.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.